Many of our company’s new laser engraving will not be used yet. When it was installed, a professional teacher was responsible for it. But yesterday, she asked for leave and had to copy many documents. We don’t know how to operate it. We dare not make a random attempt to damage the new laser engraving. Finally, I studied the instructions carefully to try, it seems that a lot of things are trying and groping on their own, although I am still worried that I have damaged laser engraving, but if you do not try today’s work, you will not be able to complete it, you can never find an excuse to fool the past. I have tried my best to solve the problem. This attitude was also taught by the former leaders.